25655930 has 8 divisors (see below), whose sum is σ = 46180692. Its totient is φ = 10262368.

The previous prime is 25655893. The next prime is 25655939. The reversal of 25655930 is 3955652.

It can be written as a sum of positive squares in 2 ways, for example, as 20802721 + 4853209 = 4561^2 + 2203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (25655939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282787 + ... + 1282806.

Almost surely, 2^25655930 is an apocalyptic number.

25655930 is a deficient number, since it is larger than the sum of its proper divisors (20524762).

25655930 is a wasteful number, since it uses less digits than its factorization.

25655930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565600.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 25655930 is about 5065.1683091483. The cubic root of 25655930 is about 294.9369969830.

The spelling of 25655930 in words is "twenty-five million, six hundred fifty-five thousand, nine hundred thirty".